Aleks Krotoski, Bobbie Johnson and Charles Arthur dig into this week's top stories across the web, including the optimism that Opera co-founder Jon von Tetzchner has about the new web browser ballot that Microsoft is offering its users, the latest on the Italian scandal that's got Google's top brass in the dock and Twitter's nascent advertising-based business model that's starting to rise to the surface.

Special guest Elizabeth Varley, co-founder of forthcoming London coworking space TechHub offers her insight into the growing popularity of these new shared office facilities across the UK, and we hear from Andy McMillan, founder of Belfast's most recent coworking space, Core. There's some good information at coworking.pbworks.com.

All this, plus all the feedback from across the social web - including a run down of the people you'd like us to invite to our live Tech Weekly recording at the Science Museum on Tuesday 23 March. Add your suggestions below.

It's probably not a "phishing attack": Microsoft Windows users in Europe are now starting to get a screen that offers them a choice of web browsers, as a result of an anti-trust settlement with the European Commission.